Calculates the sum of squares of deviations of the values in a data set from their arithmetic mean.
Syntax:
DEVSQ( list )
Returns the sum of the squares of the deviations of the values in the list from their arithmetic mean.
list may be a range of cells, an array, or a comma-separated list of values (which may contain cell references and also ranges of cells as one or more of its elements).
Formula:
DEVSQ = i ∑1n (xi − x)2
where n is the number of values, xi is the i‑th value, and x is the arithmetic mean of those values.
Revisions:
This function was added in Fireworkz 2.00.
Note:
DEVSQ()
is calculated using a one-pass 'calculator' approach using sum-of-squares and square-of-sums as with VAR()
etc.